EP3398808A1 - Rotary seat with raisable footrest, in particular for railway vehicle - Google Patents

Abstract

The rotary seat is equipped with at least one footrest, and comprises a device (100) for lifting the footrest from a position of use to a folded position. The lifting device (100) comprises a lever (102) configured to move the footrest to its folded position, the lever (102) being carried by the seat and having a pivot point (104), a driven end ( 110) and a driving end (112) located on either side of the articulation point (104). The lever (102) is arranged so that the driven end (110) cooperates with the footrest at least in the position of use, and the leading end (112) cooperates with a boss (118) formed on the support plate (22) as the seat moves in rotation.

Description

The present invention relates to a rotary seat, in particular for equipping a railway vehicle.

Such a seat is particularly intended to equip including a high-speed train or any major line train.

Some railway vehicles are equipped with seats with a rotation device to improve the comfort of passengers by allowing them to travel in the direction of travel regardless of the orientation of the railway vehicle.

Thus, before each journey taken by the rail vehicle, an operator actuates the rotation device to orient the seat in the right direction. The seats in railway vehicles are generally equipped with footrests. Such a footrest, when deployed, can impede the rotation of the seat, degrade the seat environment or injure the operator during such rotation.

The invention is in particular to avoid a degradation of the seat environment and to make the handling of such rotary seats by an operator faster.

For this purpose, the subject of the invention is in particular a rotary seat around a vertical axis of rotation, in particular intended to equip a railway vehicle, the seat comprising a frame rotatably mounted on a support structure comprising a support plate, the seat having at least one seat including a seat and a backrest, the seat being equipped with at least one footrest having a connecting portion connected to the seat back and a free portion, the footrest being movable around a horizontal axis of rotation between a position of use in which the free portion is adapted to receive a user's feet, and a folded position, in which the free portion is folded against the backrest, characterized in that the seat comprises a lifting device of the footrest from the use position to the folded position, the lifting device comprising a lever configured to move the footrest to its folded position, the lever being carried by the seat and having a pivot point, a driven end and a driving end located on either side of the articulation point, the lever being arranged so that the driven end comes cooperate with the footrest at least in the use position, and the leading end cooperates with a boss formed on the support plate when the seat moves in rotation.

Thanks to the lever, the footrest is automatically raised to its folded position when the seat is turned. The footrest in no way impedes the rotation of the seat, and does not risk to degrade the environment of the seat or injure the operator.

A seat according to the invention may further comprise one or more of the following features, taken alone or in any technically feasible combination.

The connecting portion of the footrest has at least one extension, the extension being intended to cooperate with the driven end of the lever at least when the footrest is in its position of use.

The lever is movable between an engagement position, in which the footrest cooperates with this lever when the footrest is in the use position, and a lowered position, the lever comprising at the point of articulation an elastic member return of this lever to its engagement position.

The footrest is movable between the use position and the folded position on a race comprising a first zone, in which the footrest is gravity-driven to the position of use, and a second zone, in which the rest is The foot is resiliently biased toward the folded position, the lever being configured to move the footrest from the use position to the second zone.

The connecting portion of the footrest comprises an elastic member for raising the footrest to its folded position, when the footrest is in the second zone.

The support plate has at least two bosses, each boss being adapted to cooperate with the same lever when the seat moves in a respective direction of rotation.

The seat is a seat of the double type which comprises two seats each having a respective seat and a respective backrest extending the corresponding seat, each seat being equipped with a respective footrest, each footrest having a respective connecting portion connected to the corresponding file and a respective free portion, each place having a respective device for lifting the corresponding footrest from the use position to the folded position, and each lifting device comprising a respective lever configured to move the corresponding footrest towards its folded position, each lever being carried by the seat, each footrest cooperating with the driven end of the respective lever at least in the position of use, and the respective leading end cooperating with a respective boss provided on the support plate, when the seat moves in rotation.

The invention also relates to a method of raising a footrest of a rotary seat, the footrest being in a position of use in which the footrest cooperates with the driven end of the lever, wherein the seat is rotated around the vertical axis at least until the driving end of the lever cooperates with a boss, causing the rotation of the lever, said rotation of the lever causing the support of the driven end of the lever on the rest-lever foot, causing the footrest to rotate to its folded position.

Advantageously, the footrest is movable between the use position and the folded position on a race comprising a first zone, in which the footrest is driven by gravity to the position of use, and a second zone, in which the footrest is elastically biased towards the folded position, and wherein the lever moves the footrest from the use position, to the second zone.

• la figure 1 est une vue de côté représentant un siège équipé d'un repose-pieds selon un exemple de mode de réalisation de l'invention,
• la figure 2 est une vue représentant le repose-pieds équipant le siège de la figure 1,
• la figure 3 est une vue représentant un dispositif de relevage du repose-pieds du siège de la figure1.

The invention will be better understood in the light of the description which follows, given solely by way of example and with reference to the appended figures, among which:

• the figure 1 is a side view showing a seat equipped with a footrest according to an exemplary embodiment of the invention,
• the figure 2 is a view representing the footrest equipping the seat of the figure 1 ,
• the figure 3 is a view showing a lifting device of the footrest of the seat of the figure 1 .

On the figure 1 , a seat 8 intended to equip a railway vehicle.

In the example described, the seat 8 is of the double type, intended to be used by two people. Such a double seat 8 has two seats 9 arranged next to each other, each having a seat 10 and a backrest 12 extending this seat 10. A double seat 8 also comprises armrests 14, for example three armrests 14 ( an armrest between the seats, and the other sides of the double seat) or four armrests 14 (two armrests on each side of each seat).

Alternatively, the seat 8 could be of the simple type for use by a person. Such a single seat comprises a single seat 9, comprising a seat 10, a backrest 12 extending the seat 10 and at least one armrest 14, in particular two armrests 14 arranged on either side of the seat 10.

The seat 8 comprises a frame 16 which carries each seat 10 and each backrest 12.

The seat 8 is equipped with a rotation device, allowing the seat 8 to rotate around a vertical axis V, between two extreme angular positions. The rotation device allows for example a rotation of the seat 8 to 180 °, to align the seat 8 with a longitudinal direction X of the railway vehicle, in one direction or another, for example depending on the direction of movement of the rail vehicle.

The seat frame is rotatably mounted on a support structure 18. The support structure 18 includes a leg 20 for facing a passage adjacent to the seat 8, a support plate 22 carried by the foot 20, and a body of fixation. In the example described, the fixing member allows the attachment of the support structure 18 to a side wall defining a room of the railway vehicle. Alternatively, the fixing member could be formed by another foot of similar shape to that of the foot 20.

The seat 8 comprises, for each place 9, a movable footrest 30 shown in more detail on the figure 2 . Each footrest 30 has a free portion 32, and a connecting portion 34 connected to the backrest 12 of the respective seat 9 by a connecting member 36.

The footrest 30 is for example made of plastic or metal.

The free portion 32 of the footrest 30 conventionally comprises a central plate 38 and two side plates 40 extending on either side of the central plate 38.

The free portion 32 is connected to the connecting portion 34 by an arm 42 extending the central plate 38 perpendicular to the two side plates 40.

A first end 44 of the arm 42 located in the vicinity of the free portion 32 and a second end 46 of the arm 42 located in the vicinity of the connecting portion 34 of the footrest 30 are defined.

In the example described, the arm 42 is bent so that the first end 44 forms an obtuse angle with the second end 46 as known per se.

The second end 46 of the arm 42 comprises at least one, for example two extensions 48 forming the connecting portion of the footrest 30. The two extensions 48 delimit between them a central space 50. The two extensions 48 are connected to the body link 36 by a pivot link 52.

The pivot connection 52 allows the rotation of the footrest 30 around a horizontal axis H between a first extreme angular position U, called the use position U, and a second extreme angular position R, called the folded position R, shown in FIG. figure 1 .

In the use position U of the footrest 30, the free portion 32 is adapted to receive a user's feet.

In the folded position R of the footrest 30, the free portion 32 is folded against the backrest 12.

The connecting portion 34 comprises at least one, for example two abutment members 54 which abut against damping pads 56, carried by the connecting member 36, when the footrest 30 is in the use position U .

The stop elements 54 extend for example transversely to the two extensions 48 and opposite the central space 50. The stop elements 54 have a general shape of L.

At least one abutment element 54, or alternatively each abutment element 54, has an extension 58 laterally extending this abutment element 54.

In a conventional manner, the footrest 30 is movable, between its use position U and its folded position R, on a stroke C comprising a first zone Z1, in which the footrest 30 is gravity-driven towards the position d U use, and a second zone Z2, wherein the footrest 30 is resiliently returned to the folded position by a resilient lifting member 60 provided for this purpose. Thus, it is sufficient to pass the footrest 30 in the first zone Z1 so that it ends its stroke C to the position of use U under the effect of gravity, or to pass the footrest 30 in the second Z2 zone so that it ends its stroke C to the folded position R under the effect of the elastic lifting member 60.

The elastic lifting member 60 comprises for example at least one spring, in particular torsion.

The elastic lifting member 60 is preferably disposed in the central space 50 delimited by the two extensions 48 of the arm 42.

Preferably, the first zone Z1 extends over less than 20% of the total stroke C of the footrest 30, and for example on 10% of this total stroke C.

Each place 9 comprises a lifting device 100 of the respective footrest 30, as shown in FIG. figure 3 . On this figure 3 , the footrest 30 is in the folded position R.

For each place 9, the lifting device 100 comprises a lever 102. This lever 102 is preferably carried by the seat 8, and in particular by the frame 16 of this seat 8. The lever 102 is configured to move the footrest 30 corresponding from the use position U, up to the second zone Z2.

The lever 102 is, for example, made of metal.

The lever 102 comprises a pivot point 104 connected to the frame 16 of the seat 8 by a pivot connection 108, a first end 110, said driven end 110 and a second end 112, said driving end 112.

The ends 110, 112 of the lever 102 are located on either side of the articulation point 104.

The lever 102 and the footrest 30 are arranged so that the footrest 30 cooperates with the driven end 110 of the lever 102, at least when the footrest 30 is in the use position U. More particularly, one of the extensions 58 of the connecting portion 34 cooperates with the driven end 110 of the lever 102, at least in the use position U of the footrest 30. Advantageously, the driven end 110 delimits a depression 114 of receiving the extension 58, receiving this extension 58 at least when the footrest 30 is in use position U.

The lever 102 is movable over a path extending between an engagement position E in which the footrest 30 cooperates with the driven end 110 of the lever when the footrest 30 is in the use position U, and a lowered position B.

When the lever 102 cooperates with the footrest 30, the movement of the lever 102 to its lowered position B causes the footrest 30 to move towards the second zone Z2 of its stroke C. This ensures the passage of the footrest 30 from its use position U to its folded position R.

Advantageously, the lever 102 comprises a resilient member 116 to return to the engagement position.

The resilient return member 116 is for example located at the point of articulation 104 of the lever 102.

The elastic return member 116 is for example a helical torsion spring.

The lifting device 100 also comprises at least one boss 118 formed on the support plate 22, the boss 118 being arranged so that it enters into cooperation with the lever 102 in the engagement position E, and more particularly with its end driving 112, during rotation of the seat 8.

The boss 118 is advantageously disposed on an edge of the support plate 22 opposite the driving end 112 of the lever 102 in at least one extreme angular position of the seat 8.

Advantageously, the support plate 22 comprises at least two bosses 118, each boss 118 being intended to cooperate with the same lever 102, each when the seat 8 moves in a respective direction of rotation.

A method of raising the footrest 30 from the use position U to the folded position R will now be described.

In the use position U of the footrest 30, this footrest 30 cooperates with the driven end 110 of the lever 102. More particularly, the extension 58 of the connecting portion 34 of the footrest 30 located opposite of the hollow 114 of the lever 102 comes to be housed in the hollow 114 of the lever 102, and the lever 102 is in the engagement position E.

The seat 8 is rotated about the vertical axis V at least until the driving end 112 of the lever 102 comes to cooperate with the corresponding boss 118 provided on the support structure 18. The end cooperation 110 of the lever 102 with the boss 118 causes the rotation of the lever 102 to its lowered position, causing the support of the driven end 110 of the lever 102 on the footrest 30. The rotation of the lever 102 then causes the rotation of the footrest 30 to release the footrest 30 of the first zone Z1 of its stroke C. The lever 102 moves the footrest 30 from the use position U, up to the second zone Z2.

The footrest 30 is then pushed beyond the first zone Z1 of its stroke C. Beyond this first zone Z1, the footrest 30 enters the second zone Z2 of its stroke C, in which the rest -foot 30 is driven by the elastic member 60 lifting this footrest 30 to its folded position R.

Thanks to this automatic folding, such a footrest 30 has the advantage of not degrading the environment during the rotation of the seat 8. In addition, an operator who puts a seat 8 according to the invention in rotation is not likely to be injured with a footrest 30 in the use position U.

Finally, the operator does not waste time manually raising the footrests 30.

Claims (9)

Seat (8) rotatable about a vertical axis of rotation (V), in particular intended to equip a railway vehicle, the seat (8) comprising a frame (16) rotatably mounted on a support structure (18) comprising a plate support (22), the seat (8) having at least one seat (9) having a seat (10) and a back (12), the seat (8) being equipped with at least one footrest (30) having a connecting portion (34) connected to the backrest (12) of the seat and a free portion (32), the footrest (30) being movable about a horizontal axis of rotation (H) between a position of use (U) wherein the free portion (32) is adapted to receive a user's feet, and a folded position (R), in which the free portion (32) is folded against the backrest (12), characterized in that that :
the seat (8) comprises a device (100) for lifting the footrest (30) from the use position (U) to the folded position (R), the lifting device (100) comprising a lever (102) configured to move the footrest (30) to its folded position (R), the lever (102) being carried by the seat (8) and having a pivot point (104), a driven end (110) and a driving end (112) located on either side of the articulation point (104), the lever (102) being arranged so that the driven end (110) cooperates with the footrest (30) at least in the use position (U), and the driving end (112) cooperates with a boss (118) formed on the support plate (22) when the seat (8) moves in rotation. Seat (8) according to claim 1, wherein the connecting portion (34) of the footrest (30) has at least one extension (58), the extension (58) being intended to cooperate with the driven end ( 110) of the lever (102) at least when the footrest (30) is in its use position (U). Seat (8) according to claim 1 or 2, wherein the lever (102) is movable between an engagement position (E), wherein the footrest (30) cooperates with the lever (102) when the rest -foot (30) is in the use position (U), and a down position (B), the lever (102) comprising at the hinge point (104) an elastic member (116) for biasing the lever (102) ) to its engaged position (E). Seat (8) according to any one of the preceding claims, wherein the footrest (30) is movable between the use position (U) and the folded position (R) on a stroke (C) having a first zone (Z1), wherein the footrest (30) is driven by gravity to the use position (U), and a second zone (Z2), wherein the footrest (30) is elastically biased to the folded position (R), the lever (102) being configured to moving the footrest (102) from the use position (U) to the second zone (Z2). Seat (8) according to claim 4, wherein the connecting portion (34) of the footrest (30) comprises a resilient member (60) for lifting the footrest (30) to its folded position (R), when the footrest (30) is in the second zone (Z2). Seat (8) according to any one of the preceding claims, wherein the support plate (22) comprises at least two bosses (118), each boss (118) being intended to cooperate with the same lever (102) when the seat (8) moves in a respective direction of rotation. Seat (8) according to any one of the preceding claims, the seat (8) being a seat of the double type comprising two seats (9) each having a seat (10) and a respective backrest (12) extending the seat ( 10), each seat (9) being equipped with a respective footrest (30), each footrest (30) having a respective connecting part (34) connected to the corresponding backrest (12) and a free part ( 32), each seat (9) having a respective lifting device (100) for lifting the footrest (30) corresponding from the use position (U) to the folded position (R), and each lifting device (100). ) comprising a lever (102) respectively configured to move the corresponding footrest (30) to its folded position (R), each lever (102) being carried by the seat (8), each footrest (30) co-operating with the driven end (110) of the respective lever (102) at least in the operating position ion (U), and the respective leading end (112) cooperating with a boss (118) respectively formed on the support plate (22), when the seat (8) moves in rotation. Method for lifting a footrest (30) of a rotary seat (8) according to any one of the preceding claims, the footrest (30) being in a position of use (U) in which the seat -foot (30) cooperates with the driven end (110) of the lever (102), wherein the seat (8) is rotated about the vertical axis (V) at least until the end driving (112) of the lever (102) comes to cooperate with a boss (118), causing the rotation of the lever (102), said rotation of the lever (102) causing the driven end (110) of the lever to be supported on the footrest, causing the footrest (30) to rotate to its folded position (R). Lifting method according to claim 8, wherein the footrest (30) is movable between the use position (U) and the folded position (R) on a stroke (C) having a first zone (Z1), in wherein the footrest (30) is gravity-driven to the use position (U), and a second zone (Z2), in which the footrest (30) is elastically biased to the folded position (R), and wherein the lever (102) moves the footrest (30) from the use position (U) to the second zone (Z2).

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